Refractory

Basic Info. Model NO.: MgO Classification: Metallurgical Magnesite Shape: Granule Origin: China Product Description Olivine sand specs: MgO 40-45% Min SiO2 41-45% Max Fe2O3 10% Max L O I 5% Max Size: 1-5mm, 2-6mm 95% Min or at option. Calcined Olivine sand specs: Mgo>43.5%, SiO2<43% , Fe2O3 10% Max L O I 2% Max Size: 1-5mm, 2-6mm 95% Min or at option. packing: big bags or as per request.

Minimum Order: 20 square metres

Laurel High Alumina Brick, Engineered for extreme heat resilience, High Alumina Brick combines premium alumina compounds with advanced refractory properties. Its dense, corrosion-resistant structure withstands thermal shock and aggressive environments, ensuring reliable performance in high-temperature systems. it offers energy-efficient insulation and simplifies installation in industrial settings. Eco-friendly and compliant with global standards, this brick delivers long-lasting thermal protection for demanding applications, balancing safety, sustainability, and cost-effectiveness in diverse high-heat operations. Discover more: https://www.laurelrefractory.com/

Minimum Order: 1 bags

High alumina bricks are a type of refractory material, and the main component of this refractory brick is Al2O3. In China, the Al2O3 content in high alumina bricks is usually divided into three grades: Grade I - Al2O3 content>75%; Grade II - Al2O3 content is 60-75%; Grade III - Al2O3 content is 48-60%. High stability, high load softening temperature, high room temperature compressive strength, and other significant characteristics. Widely used in the metallurgical industry, glass industry, cement industry, etc.

Minimum Order: 1 bags

Clay bricks are mainly made of clay as the main raw material, formed by mechanical extrusion, air dried, and sent into the kiln. They are then calcined at high temperatures of 900-1000 ℃ to form bricks. The content of aluminum oxide is 30-35%. It has good heat resistance, high compressive strength, and other characteristics. Customization can be made according to user requirements.

Minimum Order: 1 bags

Our factory can produce 65-92 content of Caustic Calcined Magnesite, which can be used in many fields such as environmental protection desulfurization, building materials manufacturing, sewage treatment, firecracker fixing agent, chemical raw materials, fertilizer feed and so on. Welcome to contact us! www.various-mining.com

Common Fused Magnesite is fused at high temperature in the arc using excellent magnesite or light burned magnesium as raw materials. Dense structure, strong slag resistance, and superior high-temperature volume stability. Fused Magnesite mainly used as a good raw material for high-grade alkaline bricks, carbon-containing products and indeterminate refractories. www.various-mining.com

www.various-mining.com

Magnesia chrome brick is a type of refractory brick. Magnesia chrome brick is made by combining (MgO) and chromium trioxide (Cr2O3) in a high-temperature firing process. The resulting brick is highly resistant to corrosion, thermal shock, and wear. Magnesia Chrome Brick is mainly used in the metallurgical industry, such as the construction of flat-bottom furnace roofs, electric furnace roofs, refining furnaces outside the furnace, and various non-ferrous metal smelting furnaces. The content of chrome can be adjusted according to the customer’s requirement.  Magnesia chrome brick Features Good thermal shock resistance Excellent slag wear resistance Good cold compression strength High temperature resistance and high fire resistance High-grade chrome ore raw materials Lower impurity content

Magnesia Carbon Brick is a resin-bonded brick produced from dead-burned or fused magnesia and graphite, with some metallic powder as anti-oxidants to protect the carbon durability. MgO-C bricks are used extensively in high quality steel alloy making processes especially in basic oxygen furnaces, electric arc furnaces, ladle refining furnances,and is widely popular in the steelmaking industry. Magnesia Carbon Brick is mainly used in the converter lining, which is in direct contact with molten steel and molten slag. Mag Carbon Bricks have been used in the ladle refining slag line and has achieved good results. It is also used in the lining part of AC electric arc furnace, DC electric arc furnace, converter and other components. Mingshi Magnesia Carbon Brick Advantages: Good high temperature resistance: Bbetter insulation performance than magnesium aluminum carbon brick Strong anti-slag penetration resistance Resistance to thermal shock High Corrosion resistance to slag Non-Wettability to molten slag Increases lifespan of the vessal. Proper residual expansion

What is Caustic Calcined Magnesite (CCM) Caustic calcined magnesia (CCM) is a highly reactive form of magnesium oxide produced by calcining crude magnesite, brucite, or magnesium hydroxide extracted from brine at temperatures between 600°C - 1000°C. CCM is mainly used in: Agricultural applications, Hydrometallurgical processes, Pulp and paper, Construction and Sorel cement, Chemicals and pharmaceuticals industry, Environmental applications, Glass industry. Application: Construction: Indust , rial Flooring ·Ceramic tiles, boards & panels ·Abrasives Industrial: Hydrometallurgy ·Pulp & Paper Specialties: ·Glass making ·Friction materials Agri-business: ·Animal Nutrition ·Fertilizers ·Agriculture Enviromental: ·Soil decontamination ·Waste neutralization ·Water treatment ·Flue gas treatment

Fused magnesia (FM) is a type of refractory material that is produced by the electric arc melting of caustic calcined magnesia, deadburned magnesia or raw magnesite in furnaces at temperatures in excess of 2750°C. It has a high melting point, excellent thermal shock resistance, and good chemical stability, making it a popular choice for use in a variety of industrial applications such as steelmaking, cement manufacturing, and glass production.  Fused magnesia (FM) Application: - High performance MgO-C refractory bricks for steel industry, - Fired refractory bricks for cement and glass industry, - Heating elements industry Mingshi Fused Magnesia Production Process: Magnesite (magnesium carbonate MgCO3) is converted into magnesia by the application of heat which drives off carbon dioxide (CO2), thereby converting the carbonate to the oxide of magnesium (MgO). Fused magnesia is a high-purity material used in the production of refractory materials, ceramics, and other industrial applications. The production of fused magnesia involves several steps. Raw Material Preparation: The raw material used in the production of fused magnesia is magnesite, a natural mineral. The magnesite is first crushed into small pieces and then calcined at high temperatures to remove impurities and water. Fusion: The calcined magnesite is then mixed with coke and other additives and fed into an electric arc furnace. The furnace is heated to a temperature of around 3,000 degrees Celsius, causing the magnesite to fuse into a molten state. Cooling and Solidification: The molten magnesia is then cooled and solidified by pouring it into molds or by spraying it with water. This process can take several days or even weeks, depending on the size and shape of the desired product.

85%-92% Dead burned magnesiais mainly made of natural magnesite ore with 46% content, which is calcined by high temperature kiln at about 1400℃-1800℃. Application: Dead burned magnesia is mainly used as raw material for making magnesia bricks and producing amorphous refractory materials. The finished products are used in steel making, electric furnace bottom and ramming furnace. The main varieties of dead burned magnesia have 85%-92% content, these varieties are mainly selected 46.5% to magnesite, sintered kiln calcination heating to 1400-1800 ℃ Mg(CO3) completely decomposed, generating magnesite, become hard reddish-brown dead burned magnesium, it has a high refractorability. Dead burned magnesia is mainly used for magnesia brick, steelmaking, electric furnace bottom and ramming furnace lining. Product Name MgO (%) SiO2 (%) Al2O3 (%) Fe2O3 (%) CaO (%) Loi (%) BD (kg/cm3) Package DBM85 85 MIN 7.0MAX 0.7MAX 0.6MAX 5.0MAX 0.8MAX 3.10MIN TON BAG (1.25) DBM90 90 MIN 4.8MAX 1.0MAX 0.7MAX 4.0MAX 0.6MAX 3.15MIN TON BAG (1.25) DBM92 92 MIN 4.8MAX 1.0MAX 0.7MAX 3.5MAX 0.5MAX 3.15MIN TON BAG (1.25)

Physical and chemical indexes: Item Unit Index Bulk density g/cm2 2.31-2.4 Water absorption % <0.5 Acid resistance % 99.8 Flexural strength Mpa 42 Crushing stength Mpa 120 Thermal stability 130°c-20°c No crackle after 3 times Chemical composition (%) SiO2 Al2O3 K2O Na2O CaO MgO Fe2O3 69.8 22.5 2.7 0.95 0.82 0.82 0.49 High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove is comparable to that of silica bricks, up to 1690~1730℃, but the softening temperature under load is more than 200℃ lower than that of silica bricks. In addition to the high refractory mullite crystals,High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove also contain nearly half of the low melting point amorphous glass phase. In the temperature range of 0~1000℃, the volume of High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove expands uniformly as the temperature rises. The linear expansion curve is approximately a straight line, and the linear expansion rate is 0.6%~0.7%, which is only about half of that of silica bricks. When the temperature reaches 1200 ℃ and then continue to rise, its volume will start to shrink from the maximum expansion. The residual shrinkage of High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove leads to the loosening of mortar joints in masonry, which is a major disadvantage of clay bricks. When the temperature exceeds 1200°C, the low melting point substances in the High Acid Resistance Fire Resistant SK34 SK36 SK38 Fire Clay High Alumina Refractory Fire Brick for hot blast stove gradually melt, and the particles are tightly pressed against each other due to surface tension, resulting in volume shrinkage. Production practice in China has proved that before crushing, high-aluminum clinker is strictly sorted and classified, and stored in tiers. The use of bauxite clinker and combined clay fin grinding method can improve product quality.

Silicious ramming material is made of high purity micro crystalline quartz sand, powder, adding high temperature sintering agent and mineralizing agent mixed into dry ramming material. As its proprietary design of granularity distribution, dense unshaped furnace lining can be obtained through a variety of knotting methods. Because the grain of quartz is small(the size of grain is 6µm-260µm), do not use H3BO3, as a result of the effect of mineralizer, the conversion rate of α- tridymite is high after sintering in the first oven, the furnace drying time is short, it has excellent volume stability, thermal shock stability and high temperature strength. In normal use, the backing keeps a certain loose layer.